“We appeal to the authorities that their investigation into this incident is carried out quickly and that strong measures are taken to ensure justice," the statement added.

The collective also called on residents of Argenteuil to show “restraint and calm” despite their "inevitable anger" over what happened.

The organisation also warned politicians against trying to use the Muslim community as a political pawn during next year's local elections.

And the Coalition against Racism and Islamophobia expressed “condolences and solidarity with the family” and its “concern and great anger over the tragedy” in a statement sent to AFP on Monday.

“The wave of attacks and Islamophobic incidents require a strong and uncompromising response from the government, which must express its solidarity with all victims, not just those which the interior minister deems worthy to receive," the statement added.